1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * mt2701-wm8960.c -- MT2701 WM8960 ALSA SoC machine driver 4 * 5 * Copyright (c) 2017 MediaTek Inc. 6 * Author: Ryder Lee <ryder.lee@mediatek.com> 7 */ 8 9 #include <linux/module.h> 10 #include <sound/soc.h> 11 12 #include "mt2701-afe-common.h" 13 14 static const struct snd_soc_dapm_widget mt2701_wm8960_widgets[] = { 15 SND_SOC_DAPM_HP("Headphone", NULL), 16 SND_SOC_DAPM_MIC("AMIC", NULL), 17 }; 18 19 static const struct snd_kcontrol_new mt2701_wm8960_controls[] = { 20 SOC_DAPM_PIN_SWITCH("Headphone"), 21 SOC_DAPM_PIN_SWITCH("AMIC"), 22 }; 23 24 static int mt2701_wm8960_be_ops_hw_params(struct snd_pcm_substream *substream, 25 struct snd_pcm_hw_params *params) 26 { 27 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream); 28 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0); 29 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0); 30 unsigned int mclk_rate; 31 unsigned int rate = params_rate(params); 32 unsigned int div_mclk_over_bck = rate > 192000 ? 2 : 4; 33 unsigned int div_bck_over_lrck = 64; 34 35 mclk_rate = rate * div_bck_over_lrck * div_mclk_over_bck; 36 37 snd_soc_dai_set_sysclk(cpu_dai, 0, mclk_rate, SND_SOC_CLOCK_OUT); 38 snd_soc_dai_set_sysclk(codec_dai, 0, mclk_rate, SND_SOC_CLOCK_IN); 39 40 return 0; 41 } 42 43 static const struct snd_soc_ops mt2701_wm8960_be_ops = { 44 .hw_params = mt2701_wm8960_be_ops_hw_params 45 }; 46 47 SND_SOC_DAILINK_DEFS(playback, 48 DAILINK_COMP_ARRAY(COMP_CPU("PCMO0")), 49 DAILINK_COMP_ARRAY(COMP_DUMMY()), 50 DAILINK_COMP_ARRAY(COMP_EMPTY())); 51 52 SND_SOC_DAILINK_DEFS(capture, 53 DAILINK_COMP_ARRAY(COMP_CPU("PCM0")), 54 DAILINK_COMP_ARRAY(COMP_DUMMY()), 55 DAILINK_COMP_ARRAY(COMP_EMPTY())); 56 57 SND_SOC_DAILINK_DEFS(codec, 58 DAILINK_COMP_ARRAY(COMP_CPU("I2S0")), 59 DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")), 60 DAILINK_COMP_ARRAY(COMP_EMPTY())); 61 62 static struct snd_soc_dai_link mt2701_wm8960_dai_links[] = { 63 /* FE */ 64 { 65 .name = "wm8960-playback", 66 .stream_name = "wm8960-playback", 67 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 68 SND_SOC_DPCM_TRIGGER_POST}, 69 .dynamic = 1, 70 .playback_only = 1, 71 SND_SOC_DAILINK_REG(playback), 72 }, 73 { 74 .name = "wm8960-capture", 75 .stream_name = "wm8960-capture", 76 .trigger = {SND_SOC_DPCM_TRIGGER_POST, 77 SND_SOC_DPCM_TRIGGER_POST}, 78 .dynamic = 1, 79 .capture_only = 1, 80 SND_SOC_DAILINK_REG(capture), 81 }, 82 /* BE */ 83 { 84 .name = "wm8960-codec", 85 .no_pcm = 1, 86 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS 87 | SND_SOC_DAIFMT_GATED, 88 .ops = &mt2701_wm8960_be_ops, 89 SND_SOC_DAILINK_REG(codec), 90 }, 91 }; 92 93 static struct snd_soc_card mt2701_wm8960_card = { 94 .name = "mt2701-wm8960", 95 .owner = THIS_MODULE, 96 .dai_link = mt2701_wm8960_dai_links, 97 .num_links = ARRAY_SIZE(mt2701_wm8960_dai_links), 98 .controls = mt2701_wm8960_controls, 99 .num_controls = ARRAY_SIZE(mt2701_wm8960_controls), 100 .dapm_widgets = mt2701_wm8960_widgets, 101 .num_dapm_widgets = ARRAY_SIZE(mt2701_wm8960_widgets), 102 }; 103 104 static int mt2701_wm8960_machine_probe(struct platform_device *pdev) 105 { 106 struct snd_soc_card *card = &mt2701_wm8960_card; 107 struct device_node *platform_node, *codec_node; 108 struct snd_soc_dai_link *dai_link; 109 int ret, i; 110 111 platform_node = of_parse_phandle(pdev->dev.of_node, 112 "mediatek,platform", 0); 113 if (!platform_node) { 114 dev_err(&pdev->dev, "Property 'platform' missing or invalid\n"); 115 return -EINVAL; 116 } 117 for_each_card_prelinks(card, i, dai_link) { 118 if (dai_link->platforms->name) 119 continue; 120 dai_link->platforms->of_node = platform_node; 121 } 122 123 card->dev = &pdev->dev; 124 125 codec_node = of_parse_phandle(pdev->dev.of_node, 126 "mediatek,audio-codec", 0); 127 if (!codec_node) { 128 dev_err(&pdev->dev, 129 "Property 'audio-codec' missing or invalid\n"); 130 ret = -EINVAL; 131 goto put_platform_node; 132 } 133 for_each_card_prelinks(card, i, dai_link) { 134 if (dai_link->codecs->name) 135 continue; 136 dai_link->codecs->of_node = codec_node; 137 } 138 139 ret = snd_soc_of_parse_audio_routing(card, "audio-routing"); 140 if (ret) { 141 dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret); 142 goto put_codec_node; 143 } 144 145 ret = devm_snd_soc_register_card(&pdev->dev, card); 146 if (ret) 147 dev_err(&pdev->dev, "%s snd_soc_register_card fail %d\n", 148 __func__, ret); 149 150 put_codec_node: 151 of_node_put(codec_node); 152 put_platform_node: 153 of_node_put(platform_node); 154 return ret; 155 } 156 157 #ifdef CONFIG_OF 158 static const struct of_device_id mt2701_wm8960_machine_dt_match[] = { 159 {.compatible = "mediatek,mt2701-wm8960-machine",}, 160 {} 161 }; 162 MODULE_DEVICE_TABLE(of, mt2701_wm8960_machine_dt_match); 163 #endif 164 165 static struct platform_driver mt2701_wm8960_machine = { 166 .driver = { 167 .name = "mt2701-wm8960", 168 #ifdef CONFIG_OF 169 .of_match_table = mt2701_wm8960_machine_dt_match, 170 #endif 171 }, 172 .probe = mt2701_wm8960_machine_probe, 173 }; 174 175 module_platform_driver(mt2701_wm8960_machine); 176 177 /* Module information */ 178 MODULE_DESCRIPTION("MT2701 WM8960 ALSA SoC machine driver"); 179 MODULE_AUTHOR("Ryder Lee <ryder.lee@mediatek.com>"); 180 MODULE_LICENSE("GPL v2"); 181 MODULE_ALIAS("mt2701 wm8960 soc card"); 182 183